Finding the Fourth Proportional to 118,128.40, 176,439.64 and 106,866.49
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Solution
The fourth proportional to 118,128.40, 176,439.64 and 106,866.49 is: 159,618.55
Step by Step Solution
- Step 1: Write the proportion equation
118,128.40 : 176,439.64 = 106,866.49 : x - Step 2: Convert to fraction form
118,128.40/176,439.64 = 106,866.49/x - Step 3: Cross multiply
118,128.40x = 176,439.64 × 106,866.49 - Step 4: Simplify right side
118,128.40x = 18,855,484,470.90 - Step 5: Solve for x
x = 18,855,484,470.90/118,128.40 - Step 6: Final answer
x = 159,618.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.